Tunable bandstop filters using defected ground structure with active devices

J. D. Park, Y. J. Sung, S. H. Lee, Y. S. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)

Abstract

In this paper, tunable bandstop filters using defected ground structure (DGS) sections are presented. The DGS section is obtained by etching the conventional ground plane. To adjust the stopband, voltage controlled variable capacitor diodes (VVC) are equipped on the DGS section. The center frequency of the filter is varied from 1.44 GHz to 3.19 GHz as the reverse bias voltage is changed from 0 V to 20 V. The stopband of the proposed filter has a tunable range of 76 %. Using more than two DGS units, deeper suppression and wider tunable bandwidth are yielded. Good agreements between the simulated and measured results are obtained.

Original languageEnglish
Title of host publicationAPMC 2005
Subtitle of host publicationAsia-Pacific Microwave Conference Proceedings 2005
DOIs
Publication statusPublished - 2005 Dec 1
EventAPMC 2005: Asia-Pacific Microwave Conference 2005 - Suzhou, China
Duration: 2005 Dec 42005 Dec 7

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume1

Other

OtherAPMC 2005: Asia-Pacific Microwave Conference 2005
CountryChina
CitySuzhou
Period05/12/405/12/7

Keywords

  • Bandstop filter
  • Microstrip filter
  • Tunable filter
  • Voltage control

ASJC Scopus subject areas

  • Engineering(all)

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    Park, J. D., Sung, Y. J., Lee, S. H., & Kim, Y. S. (2005). Tunable bandstop filters using defected ground structure with active devices. In APMC 2005: Asia-Pacific Microwave Conference Proceedings 2005 [1606278] (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 1). https://doi.org/10.1109/APMC.2005.1606278